APA (7th ed.) Citation

Hoover, S. R. (1921). The science and art of salesmanship. MacMillan.

Chicago Style (17th ed.) Citation

Hoover, Simon Robert. The Science and Art of Salesmanship. New York: MacMillan, 1921.

MLA (9th ed.) Citation

Hoover, Simon Robert. The Science and Art of Salesmanship. MacMillan, 1921.

Warning: These citations may not always be 100% accurate.